Which gas law is represented by the following equation: V1/T1 = V2/T2 Gay-Lussac's law
Boyle's law
Avogadro's law
none of these
Charles's law

Charles's law

Explanation:

The expression:

     V1/T1 = V2/T2

represents Charles's law

The law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".

 So,

    V1/T1 = V2/T2

Pressure and the number of moles are constant

V and T are the volume and temperature

1 and 2 are the initial and final states.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

hope this !